diff options
Diffstat (limited to 'results/classifier/gemma3:12b/performance/1777786')
| -rw-r--r-- | results/classifier/gemma3:12b/performance/1777786 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/performance/1777786 b/results/classifier/gemma3:12b/performance/1777786 new file mode 100644 index 00000000..873bfd57 --- /dev/null +++ b/results/classifier/gemma3:12b/performance/1777786 @@ -0,0 +1,47 @@ + +virtio-gpu-3d.c: change virtio_gpu_fence_poll timer scale + +We use virtio-gpu to accelerate Unigine Heaven Benchmark in VM. But we get only 5 FPS when we use AMD RX460 in our host. +We found that guest os spent a lot of time in waiting for the return of glMapBufferRange/glUnmapBuffer commad. We suspected the host GPU was waiting for fence. So we finally change the timer of fence_poll. Afer change timer from + ms to us， Benchmark result raise up to 22 FPS. + +From a4003af5c4fe92d55353f42767d0c45de95bb78f Mon Sep 17 00:00:00 2001 +From: chen wei <email address hidden> +Date: Fri, 8 Jun 2018 17:34:45 +0800 +Subject: [PATCH] virtio-gpu:improve 3d performance greatly + + opengl function need fence support.when CPU execute opengl function, it need wait fence for synchronize GPU. +so qemu must deal with fence timely as possible. but now the expire time of the timer to deal with fence is 10 ms. +I think it is too long for opengl. So i will change it to 20 ns. + Before change, when i play Unigine_Heaven 3d game with virglrenderer, the fps is 3. atfer change the fps up to 23. + +Signed-off-by: chen wei <email address hidden> +Signed-off-by: wang qiang <email address hidden> +--- + hw/display/virtio-gpu-3d.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c +index 3558f38..c0a5d21 100644 +--- a/hw/display/virtio-gpu-3d.c ++++ b/hw/display/virtio-gpu-3d.c +@@ -582,7 +582,7 @@ static void virtio_gpu_fence_poll(void *opaque) + virgl_renderer_poll(); + virtio_gpu_process_cmdq(g); + if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) { +- timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10); ++ timer_mod(g->fence_poll, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 20); + } + } + +@@ -629,7 +629,7 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) + return ret; + } + +- g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL, ++ g->fence_poll = timer_new_us(QEMU_CLOCK_VIRTUAL, + virtio_gpu_fence_poll, g); + + if (virtio_gpu_stats_enabled(g->conf)) { +-- +2.7.4 \ No newline at end of file |